Question

Produtos Notáveis
RESOLVA: 1) (5y + 7)?
2) (3x + 8). (4x - 3)
3) (7x - 3). (8x - 4)
4) (6a - 3)2
5) (7a - 4)2
6) (9y - 10x)2
7) (8x - 3y). (9x - 4y)
8) (8a - 4y)2
9) (11x - 3)2
10) (a - b) (a - b)
11) (a + b). (a + b)
12)(a - b)(a + b)​

Answer 1

Resposta:

1) (5y + 7)²

$25 {y}^{2} + 70y + 49$

2) (3x + 8). (4x - 3)

$12 {x}^{2} - 9x + 32x - 24 \\ 12 {x}^{2} + 23x - 24$

3) (7x - 3). (8x - 4)

$56 {x}^{2} - 28x - 24x + 12 \\ 56 {x}^{2} - 52x + 12$

4) (6a - 3)2

$36 {a}^{2} - 36a + 9$

5) (7a - 4)2

$49 {a}^{2} - 56a + 16$

6) (9y - 10x)2

$81 {y}^{2} - 180xy + 100 {x}^{2}$

7) (8x - 3y). (9x - 4y)

$72 {x}^{2} - 32xy - 27xy + 12 {y}^{2} \\ 72 {x}^{2} - 59xy + 12 {y}^{2}$

8) (8a - 4y)2

$64 {a}^{2} - 64ay + 16 {y}^{2}$

9) (11x - 3)2

$121 {x}^{2} - 66x + 9$

10) (a - b) (a - b)

${a}^{2} - ab - ab - {b}^{2} \\ {a}^{2} - 2ab - {b}^{2}$

11) (a + b). (a + b)

${a}^{2} + ab + ab + {b}^{2} \\ {a}^{2} + 2ab + {b}^{2}$

12)(a - b)(a + b)

${a}^{2} - {b}^{2}$